new file: flake.nix

new file:   installer.nix

flake.nix

@@ -0,0 +1,22 @@
+# flake.nix
+{
+  description = "Auto-install NixOS ISO";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+    nixos-generators.url = "github:nix-community/nixos-generators";
+  };
+
+  outputs = { self, nixpkgs, flake-utils, nixos-generators, ... }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        iso = nixos-generators.nixosGenerate {
+          inherit system;
+          format = "install-iso";
+          modules = [ ./installer.nix ];
+        };
+      in {
+        packages.default = iso;
+      });
+}

installer.nix

@@ -0,0 +1,151 @@
+{ lib, pkgs, modulesPath, config, ... }:
+
+{
+  imports = [
+    "${modulesPath}/installer/cd-dvd/installation-cd-minimal.nix"
+  ];
+
+  networking.useDHCP = lib.mkDefault true;
+  time.timeZone = "Australia/Brisbane";
+
+  services.openssh.enable = true;
+  services.openssh.settings.PermitRootLogin = "yes";
+
+  environment.systemPackages = with pkgs; [
+    git curl parted e2fsprogs btrfs-progs util-linux
+  ];
+
+  environment.etc."flake-url".text = "git+https://gitea.lan.ddnsgeek.com/beatzaplenty/nixos.git?ref=main#nixos";   
+
+environment.etc."git-credentials".text = 
+  "https://beatzaplenty:2b7e178eeee4af437fc721295d59e9e19366fd02@gitea.lan.ddnsgeek.com";
+#programs.git.enable = true;
+#programs.git.extraConfig."credential.helper" = "store --file=/etc/git-credentials";
+  programs.git = {
+    enable = true;
+    package = pkgs.git;
+    config = {
+      credential.helper = "store --file=/etc/git-credentials";
+    };
+  };
+
+  # Write auto-install script to /root
+  environment.etc."auto-install.sh".text = ''
+    #!/run/current-system/sw/bin/bash
+    set -eux
+
+    
+    export TMPDIR=/mnt/install-tmp
+
+    parted -s /dev/sda -- mklabel msdos
+    parted -s /dev/sda -- mkpart primary 1MB -8GB
+    parted -s /dev/sda -- set 1 boot on
+    parted -s /dev/sda -- mkpart primary linux-swap -8GB 100%
+    mkfs.ext4 -L nixos /dev/sda1
+    mkswap -L swap /dev/sda2
+    swapon /dev/sda2
+    mount /dev/disk/by-label/nixos /mnt
+    mkdir -p /mnt/install-tmp
+    nixos-install --flake "$(cat /etc/flake-url)" --no-root-password --no-write-lock-file
+    rm -rf /mnt/install-tmp
+    sleep 10
+    reboot
+  '';
+  environment.etc."auto-install.sh".mode = "0755";
+
+environment.etc."nixos/.bash_profile".text = ''
+  if [[ $- == *i* ]]; then
+    echo "Launching installer script..."
+    sudo /etc/auto-install.sh
+    mv ~/.bash_profile ~/.bash_profile.done 2>/dev/null || true
+    exit
+  fi
+'';
+environment.etc."nixos/.bash_profile".mode = "0755";
+
+  # systemd.services.autoInstallInteractive = {
+  #   description = "Interactive NixOS installer on tty1";
+  #   conflicts = [ "getty@tty1.service" ];
+  #   after = [ "getty@tty1.service" ];
+  #   wantedBy = [ "multi-user.target" ];
+
+  #   serviceConfig = {
+  #     Type = "simple";
+  #     StandardInput = "tty";
+  #     StandardOutput = "inherit";
+  #     TTYPath = "/dev/tty1";
+  #     TTYReset = true;
+  #     TTYVHangup = true;
+  #   };
+
+# systemd.services."autovt@tty1" = {
+#   description = "Run installer script on TTY1";
+#   after = [ "getty@tty1.service" ];
+#   wantedBy = [ "multi-user.target" ];
+
+#   serviceConfig = {
+#     ExecStart = [ "" "@${pkgs.util-linux}/sbin/agetty" "agetty --noclear --autologin root --login-program /etc/auto-install.sh %I $TERM" ];
+#     Type = "idle";  # wait for console initialization
+#     Restart = "no";
+#   };
+
+
+#     path = [
+#       pkgs.bash
+#       pkgs.parted
+#       pkgs.util-linux
+#       pkgs.e2fsprogs
+#       pkgs.nixos-install
+#       pkgs.git
+#     ];
+    # Run script attached to tty1
+#    script = "exec /etc/auto-install.sh";
+  }
+  # systemd.services.autoInstall = {
+  #   description = "Automatic NixOS installation";
+  #   wantedBy = [ "multi-user.target" ];
+  #   after = [ "network-online.target" ];
+  #   path = [
+  #     pkgs.parted
+  #     pkgs.util-linux
+  #     pkgs.e2fsprogs
+  #     pkgs.nixos-install
+  #     pkgs.nix
+  #     pkgs.git
+  #     pkgs.bash
+  #   ];    
+  #   serviceConfig = {
+  #     Type = "oneshot";
+  #     ExecStart = pkgs.writeShellScript "auto-install.sh" ''
+  #       set -eux
+  #       #create MBR table
+  #       parted /dev/sda -- mklabel msdos
+  #       #create nixos partition
+  #       parted /dev/sda -- mkpart primary 1MB -8GB
+  #       #set nixos partition to bootable
+  #       parted /dev/sda -- set 1 boot on
+  #       # create swap partition
+  #       parted /dev/sda -- mkpart primary linux-swap -8GB 100%
+
+  #       #format OS partition
+  #       mkfs.ext4 -L nixos /dev/sda1
+  #       #format swap
+  #       mkswap -L swap /dev/sda2
+
+  #       #activate swap
+  #       swapon /dev/sda2
+
+  #       #mount nixos partition
+  #       mount /dev/disk/by-label/nixos /mnt
+  #     # Choose a disk-backed temp directory
+  #       mkdir -p /mnt/install-tmp
+  #       export TMPDIR=/mnt/install-tmp
+
+  #       nixos-install --flake "$(cat /etc/flake-url)" --no-root-password --no-write-lock-file
+  #       rm -r /mnt/install-tmp
+  #       sleep 10
+  #       reboot
+  #     '';
+  #   };  
+  # };
+